A/C Install Help! (pics)

I am planning on putting A/C back on the '81 BRAT. What i mean by back on, is that it looks like it once had A/C and it was stripped off. Now that I may be moving to Phoenix for work A/C is a necessity. I have read around and found out that There are two types of A/C systems the factory one and the dealer option one. I didn't see a sticker anywhere that says ready for dealer install. If this had A/C they really stripped it all, there is no condenser, no reciever drier no brackets for the comp. So I am looking to find out what years/makes/models I can get A/C stuff from. I have some pics of under the hood and a pic of the heater controls if that would help a trained eye. I really wanna get this A/C going though, so any help is much appreciated.

And for the pics:

Wiring connectors on the passenger side next to strut

Vacuum deal next to firewall on passenger side

Single cooling fan on radiator

A/C control in dash

anything helps,

Thanks

Kurt Abersold

'81 Brat